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Ch. 16 The Endocrine System

Chapter 15, Problem 9

If there is adequate carbohydrate intake, secretion of insulin results in a. lower blood glucose levels, b. increased cell utilization of glucose, c. storage of glycogen, d. all of these.

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Welcome back, everyone. Here's our next problem which of the following hormones is involved in lowering blood glucose levels after meals by stimulating glycogen synthesis, promoting lipid synthesis, inhibiting gluconeogenesis and increasing cellular cellular utilization of glucose choice A glucagon B, Cortisol C adrenaline or D insulin. Well, our an answer here is Joyce D insulin, insulin is probably most well known for its role in lowering blood glucose levels because it involves the cellular uptake of glucose and then storage of it. Uh if there is excess. So let's look at our other answers to understand why they're not correct. All of these other hormones increase blood glucose levels. In the case of gluon, it is involved in promoting the breakdown of glycogen in the liver, which of course, when you break down glycogen, you produce glucose. And then in the case of cortisol and adrenaline, both of these are involved in the fight or flight response. Adrenaline being that first hormone involved in that response, which increases heart rates, breathing blood pressure, all these things to prepare the body to fight or run away and also increases glucose levels to give your body plenty of energy to work from and then cortisol sustains that alert state by stimulating the release of glucose, both by the breakdown of glycogen and the breakdown of fats as well. So again, providing and lots of energy for the muscles to sustain that fight or flight response. So that's why A B and C are not our correct answer. And again, the hormone involved in lowering blood glucose levels after meals by stimulating glycogen synthesis, promoting lipid synthesis, inhibiting gluconeogenesis and increasing cellular cellular utilization of glucose is choice d insulin. See you in the next video.